No, it's instance by instance. You will see some amount of cooperation, but it's not enforced by any means just a cultural norm created by the twitter refugees to mastodon. GnuSocial has a bit of a libertarian bent, Mastodon instances have a bit of a leftist bent, and of course there's the instances which are both, so it's not really a binary but rather a spectrum. Yes Libertarian and left surprisingly to many are not mutually exclusive.